189898950 has 24 divisors (see below), whose sum is σ = 470949768. Its totient is φ = 50639680.

The previous prime is 189898949. The next prime is 189898967. The reversal of 189898950 is 59898981.

It is a super-2 number, since 2×189898950² = 72123222422205000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632847 + ... + 633146.

It is an arithmetic number, because the mean of its divisors is an integer number (19622907).

Almost surely, 2^189898950 is an apocalyptic number.

189898950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189898950 is an abundant number, since it is smaller than the sum of its proper divisors (281050818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189898950 is a wasteful number, since it uses less digits than its factorization.

189898950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266008 (or 1266003 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 57.

The square root of 189898950 is about 13780.3827958442. The cubic root of 189898950 is about 574.7877729704.

The spelling of 189898950 in words is "one hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred fifty".